Abstract
Karyotypes of 13 species in the anuran family Hyperoliidae are described based on conventional staining, C‐banding, Ag‐NOR‐banding and staining with fluorochromes (CMA3 and DAPI). The nine studied species of the Malagasy genus Heterixalus, as well as African species of Acanthixalus, Hyperolius and Kassina, had a karyotype of 2n = 24 biarmed chromosomes with NORs on the ninth chromosome pair, whereas the sole species of Leptopelis studied had 2n = 24 with one telocentric pair and NORs on the fifth pair. These data confirm the isolated position of Leptopelis, which according to molecular data does not form a clade with other hyperoliids. Details of NOR location, relative chromosome size and heterochromatin distribution suggest a phylogenetic hypothesis, within Heterixalus, that is largely though not completely in agreement with bioacoustic and molecular data sets: ((betsileo, tricolor, variabilis, (andrakata, (alboguttatus, boettgeri))), (rutenbergi, (luteostriatus, punctatus))).
Published Version
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